[4497] Removed spurious headers from the option unit tests.

src/lib/dhcp/tests/option_unittest.cc

@@ -6,12 +6,9 @@
 
 #include <config.h>
 
-#include <asiolink/io_address.h>
 #include <dhcp/dhcp6.h>
 #include <dhcp/libdhcp++.h>
 #include <dhcp/option.h>
-#include <dhcp/option_int.h>
-#include <dhcp/option4_addrlst.h>
 #include <exceptions/exceptions.h>
 #include <util/buffer.h>
 
@@ -27,7 +24,6 @@
 
 using namespace std;
 using namespace isc;
-using namespace isc::asiolink;
 using namespace isc::dhcp;
 using namespace isc::util;
 using boost::scoped_ptr;